Article Photos: Cuba has much to lose as ally Chavez fights cancer 1/4

FILE - In this Feb. 22, 2012 file photo, a mural featuring Venezuela's President Hugo Chavez, left, and Cuba's Fidel Castro, adorns a wall in Caracas, Venezuela. Under Chavezâs leadership, Venezuela has sent billions of dollars a year to Cuba through trade and petro-aid, supplying about half of the islandâs energy needs at greatly subsidized rates. The Venezuelan president regularly calls Fidel Castro his ideological father and has followed much of the Communist legendâs governance and foreign relations playbook. (AP Photo/Ariana Cubillos, File)